Question

The angles a b c and d of a quadrilateral abcd are in the ratio 2 is to 4 is to 5 is to 7

Answer 1

let x be common factor in ratio

sum of angle of quadrilateral is 360

2x+4x+5x+7x=360

18x=360

x=20

Angle a b c and d is

40,80, 100, 140

Answer 2

Step-by-step explanation:

let angle of quadrilateral be 2x,4x,5xand7x

2x+4x+5x+7x=360

18x=360

x=20

2x=2×20=40

4x=4×20=80

5x=5×20=100

7x=7×20=140